Closure means for transom-passages and the like.



R. C. MITCHELL.

CLOSURE MEANS FOR TRANSOM PASSAGES AND THE LIKE.

APPLICATION FILED JULYH, 1914. RENEWED FEB. 1.1917.

Patented 'Mar. 13, 1911'.

UNITED STATES PATENT OFFICE.

ROBERT C. MITCHELL, OF MOUNT VERNON, NEW YORK.

I CLOSURE MEANS FOR TRANSOM-PASSAGES AND THE LIKE.

Specification of Letters Patent. Patented Mar. 13 1917.

Application filed July 11, 19 14, Serial No. 850,521. Renewed February1, 191:7. Serial No. 145,999.

To all whom it may concern:

Be it known that I, ROBERT C. MITCHELL, a citizen of the United States,residing at Mount Vernon, Westchester county, New York State, haveinvented certain new and useful Improvements in Closure Means forTransom-Passages and the like, of which the following is a full, clear,and exact description. Y

My invention relates to closures for doorways, windows, transom passagesand the like, the main object being to provide an attractive, simple andeffective means for controlling such passage-ways for the purpose ofventilation, the construction of the device being'such that when it isopen for the purpose of ventilation it will still obstruct the line ofvision through the passage. )b-

- viously for use in connection with transoms for bed rooms, it isdesirable to provide a closure means which may be opened and closed forventilation, and yet when open will obstruct the line of vision.

In the accompanying drawings:

Figure 1 is a view of the inside of a door casing and door with atransom passage above the door in which my improved closure is located,said view being partly broken away and in section.

Fig. 2 is a relatively enlarged horizontal sectional view of the closuremeans.

Fig. 3 is a cross-section on the ,line 3-3,

.of Fig. 2.

1 represents a door casing. 2 represents a door therein. Above the dooris the usual transom passage way, such as ordinarilyclosed by a solidwood panel or a glass sash. By my invention I substitute in lieu of suchclosure means, a novel construction of closure comprising in itssimplest and preferred form, only two slotted plates 3-4, the solid partof one plate standing in front of the slotted part of an adjacent plate,the plates being moved toward and from each other to open and close theventilating passage throughthe slots. I also provide between the plateswhat I term guards, preferably formed integrally with the plates, forexample, the slots for the passage-way 5 are provided with guard flanges5 -5, while the slots for the passage-ways 6' are provided with guardflanges (i -6 When the plates 3-4 are moved apart as shown in solidlines Fig. 2, currents of air may pass through the closure, followingthe direction of the arrows. When, however, the plates are moved to asecond pos1t1on indicated by dotted lines in Fig. 2, the passage-waysfor the air will liquely toward or from the other plate. In I thedrawings the plate 4 is illustrated as the movable plate. To move thesame, I may provide an operating handle 10 mounted on an upright shaft11 located within the door casing 1 and carrying a crank 12, which isconnected by a link 13, which passes through a slot in the door casingand engages the plate 4 thus constituting practically a concealedoperating device.

The plate 34- may have respectively, flanges 3 3 and 44 at their upperand lower edges, and the guard flanges 5 and 6 may be cut away to affordclearance therefor. For example, the flange 5 may be cutaway at itslower end (Fig. 3) to afford clearance for the edge flange 49 while theflange 6 may be cut away at its upper end to afford clearance for theedge flange 3". By this simple expedient the plates 3 and 4 may be madeto correspond thus saving in manufacture.

It should be understood that I have shown and described my improvedclosure only in one preferred form, and that various modifications inconstruction, design and arrangement of parts may be made with thedeparture from the scope of the invention. Any means for effectingarelative movement of the slotted plates or guard flangesmay besubstituted for the means shown, namely, the pin and slot, that meansbeing shown, herein merely as illustrative of one very simple expedientfor effecting the desired movement between the parts.

. What I claim is:

1. In a closure of the character described, two plates having airpassages therein, the solid parts of one plate standing in front of theair passages in the other plate,.said plates'being relatively movable toopen and close said air passages, with guard means to interrupt alllines of vision through said air passages when the plates are so placedas to open said passages. p 2. In a closure of the character described,two plates having air passages therein, the solid parts of one plateextending in front of the air passages in the other plate, said platesbeing relatively movable to open and close said air passages, withguardmeans to interrupt all lines ofvision through said air passages when theplates are soplaced as to open said passages, said guard means beingformed integrally with one of said plates.

3. In a closure of the character described, two plates having airpassages therein, the

-solid parts of one plate extending in front of the air passages in theother plate, said plates being relatively movable to open and close saidair passages, with guard means to interrupt alllines of vision throughsaid air passages when the plates are so placed as to open saidpassages, said guard means being formed integrally with one of saidplates and comprising flanges adjacent the edges of said air passages.

4. In a. closure of the character described, two plates having airpassages therein, the solid parts of one plate standing in front of theair passages in the other plate, said plates being relatively movable toopen. and closesaid air passages, with guard means on both plates tointerrupt all lines of vision through said air passages when the plates.

are so placed as to open said passages, with means to move said platestoward and from each other.

5. In a closure of the characterdescribed, two plates having airpassages therein, the solid parts of one plate standing in front of theair passages in the other plate, said plates being relatively movable toopen and close said air passages, with guard means. to interrupt alllines of vision through said air passages when the plates are so placedas to open said passages, with means to move said plates toward and fromeach other in a relatively oblique direction.

6. In a closure of the character described, two plates having slottedair passages therein, the solid parts of one plate overstanding theslotted parts of the other plate, guard means for interrupting all linesof vision through the slots of said closure when said slots are open forventilation.

7. In a closure of the-character described, two plates having slottedair passages therein, guard means adjacent to said passages forinterrupting all lines of vision through the slotted parts of saidplates to which would otherwise be aflorded when said slots are openedfor ventilation, one of said plates being slidable relatively to theother to open and close the passages therethrough formed by said slots.

- sages.

8. In a closure of the character described, two plates having apluralityof air passages therethrough adapted to be opened and closed, guardmeans adjacent to said passages for interrupting all lines of visionthrough said passages which would otherwise be afforded when saidpassages are opened for the purposes of ventilation.

;9. In a closure of the character described, two plates having aplurality of air passages therethrough adapted to be opened and closed,guard means carried by both of said platesand' adjacent to said passageswhich would otherwise be afforded for interrupting all lines of visionthrough said passages when the passages are opened for the purposes ofventilation. f

10. In a closure of the character described, two plates having airpassages therein, the solid parts of one plate standing in front of theair assages in the other plate, said plates belng relatively movable toopen and close said air passages, with guard means to interrupt thelines of vision through said air passages in substantially alldirections when the plates are so positioned as to open said passages,with manually operable means for effecting a relative movement of saidplates to open and close said passages.

11. In a closure of the character described,

two plates having air passages therein, the

solid parts of one late standing in front of theair passages 1n theother plate at all times, said plates being relatively movable to openand close said air passages for ventilating purposes, with uard means tointerrupt the lines of vision through said air passages in substantiallyall directions when the plates are so positioned as to open saidpassages, with manually operable means for effecting a relative movementof said plates to open and close said passages.

. 12. In a. closure of the character described, two plates havingelongated air passages therein, the solid parts of one plateoverstanding at all times the air passages in the other plate, saidplates being relatively movable toward and from each other for openingand closing the air passages for ventilating purposes, guard meanscarried by said plates to interrupt the lines of vision through said airpassages in substantially all directions when said plates are sopositioned asto open said passages, with manually operable meansconnected with one of said plates so as to move the same relatively tothe other for the purpose of opening and closing said passages and forthe purpose of varying the degree of opening of said pas- 13. In aclosure of the character described, two plates slldably engaged at theiredges to be moved to and from each other, a plurality of longitudinalair passages in each of said plates, the solid parts of each plate formoving one of said plates relatively to overstanding the slotted partsof the other the other to open and close said passages.

plate at all times to interrupt the lines of vision therethrough whethersaid passages ROBERT IT are opened or, closed, with guard means co-Witnesses:

operating to assist in interrupting said lines THOs. A. FAIR, of visionand with manually operable means HENDERSON F. HILL.

